Valve.



A. L. WERNERT & P. C. DAVISON.

VALVE.

nPLIoATIoN Hmm MAB. 16, 1911.

1,004,512. Patented sep1.26,1911.

MM 7, @m

fio

UNITED STATES PATENT OFFICE.

ALBERT L. WERNERT AND FREDERICK C. DAVISON, OF ATLANTA, GEORGIA.

VALVE.

Specification of Letters Patent.

Patented Sept. 26, 1911.

To all 'whom 'it may concern:

Be it known that we, ALBERT L. WERNERT and FREDERICK C. DAvIsoN,citizens of the United States, residing at Atlanta, in the county ofFulton and State of Georgia, have invented new and useful Improvementsin Valves, of which the following is a specication.

This invention relates to improvements in valves, primarily intended foruse in connection with inflammable liquids, gases or the like, and theprimary object of the invention is to provide a normally open valve withmeans for automatically closing the Vsame when the valve becomes heatedbeyond merals 1 and 2 designate sections of a gas or other pipe which isadapted to contain explosive fluids. These pipes are connected with theopposite ends of a valve casing 3. The casing is of the ordinaryconstruction, being centrally provided with a valve seat 4 and having anlntegrally threaded off-set 5 which is arranged directly above the seat4.

The numeral 6 designates a threaded plug which is adapted to be receivedwithin the threaded olf-set 5. This plug 6 is centrally provided with avertically extending recess or bore 7, and the lower portion of the plugis provided with a downwardly extending sleeve 8. The plu 6 is formedadjacent its upper portion with a longitudinally arranged recess or bore9, the same intersecting the recess or bore 7.

The numeral 9 designates the valve which is arranged directly above thevalve seat 4. This valve has its body portion formed with an opening,the same being threaded and adapted for the reception of the lowerthreaded portion 10 of a valve stem 11. The stem 11 is formed with anannular reduced or cut away portion 12, the same being adapted toreceive a suitable fusible material 13, the said cut away portion l2being arranged at the intersection of the bores 7 and 9. By thisarrangement, the fusible material can be applied to the bore 9 so as tocontact with the shoulder formed by the depressed portion 12 to sustainthe valve 9 in a proper position in relation to its valve seat 4.

The numeral 14 designates a helical spring which is adapted to surroundthe sleeve 8 and the stem 11.

From the above description, taken in connection with the accompanyingdrawings, it will be noted that the fusible material may be readilyapplied to secure the stem 11 to retain the valve 9 against the pressureof the spring 14. It will be further noted that should the device besubjected to an extraordinary amount of heat, the material 13 will fuse,allowing the valve to be forced downwardly upon its seat 4 and to beguided thereto through the medium of a sleeve 8.

Having thus described the invention, what we claim is In a device forthe purpose set forth, a valve casing having a removable plug above thevalve seat, the said plug being 4formed with bores arranged at rightangles to each other said bores intersecting and one of the boresextending vertically above the valve seat, the plug beingprovided uponits lower face with an extending sleeve the bore of which is acontinuation of the vertically arranged bore, a valve having a valvestern, said stem being Vprovided with a recessed portion and adapted tobe arranged within the bore provided within the sleeve and to have thesaid recessed portion positioned at the junction of the bores and toreceive a fusible material, and a helical spring surrounding the sleeveto exert pressure between the plug and the valve.

In testimony whereof we ailix our signatures in presence of twowitnesses.

ALBERT L. WERNERT. FREDERICK C. DAVISON. Witnesses:

L. M. BAGWELL, "l

J AMES E. GARs'r.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

